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jHands wrote: ↑Mon Dec 01, 2025 8:12 pm

I am aware of how to change the impedance to the amp with parallel vs series wiring the pair of 8's in the enclosure, but does the compression driver after the crossover alter the impedance at the amp?
It doesn't.


The Beta 8a is rated for 225w continuous power. If I deliver 450 watts to the enclosure, does this then get split into 225 to each of the drivers? I haven't found an amp to do this yet, but I am wondering if my math is correct.
Power ratings on speakers are thermal. Your concern should be excursion. That's based on the high pass crossover that you use. You can let 'em run naked or limit them. Unlike a sub, you'll hear 'em start to squawk if you are hitting them too hard. But, with 2 OT8s and 2 subs, the OT8s will outrun the subs with very little power. A crown XLS1500 would be plenty and give you some headroom.

How much power goes to the compression driver?
It gets the same voltage, but as frequencies rise, the impedance does too....meaning the wattage at the driver is much lower than the woofer sees. Don't worry about it.

Noticed someone using a Crown XLS 1502, which delivers 525 watts per channel at 4 ohms. 262.5 is over the max of 225 to the drivers, but some of this has to be going to the compression driver to as well, no?
Regardless of the amp you use, run it wide open and use the speaker processor (driverack) to balance the system by turning down the output of the processor. That way, no one can come up and spin up your amp and blow the speakers.

Bruce Weldy wrote: ↑Mon Dec 01, 2025 9:10 pm Regardless of the amp you use, run it wide open and use the speaker processor (driverack) to balance the system by turning down the output of the processor. That way, no one can come up and spin up your amp and blow the speakers.

Bruce Weldy wrote: ↑Mon Dec 01, 2025 9:10 pm How much power goes to the compression driver?
It gets the same voltage, but as frequencies rise, the impedance does too....meaning the wattage at the driver is much lower than the woofer sees.

jHands wrote: ↑Mon Dec 01, 2025 11:01 pm

Bruce Weldy wrote: ↑Mon Dec 01, 2025 9:10 pm Regardless of the amp you use, run it wide open and use the speaker processor (driverack) to balance the system by turning down the output of the processor. That way, no one can come up and spin up your amp and blow the speakers.

Forgive my ignorance here, but the Driverack will be between the DJ equipment and the amps, correct?

Bruce Weldy wrote: ↑Tue Dec 02, 2025 9:31 am

jHands wrote: ↑Mon Dec 01, 2025 11:01 pm

Bruce Weldy wrote: ↑Mon Dec 01, 2025 9:10 pm Regardless of the amp you use, run it wide open and use the speaker processor (driverack) to balance the system by turning down the output of the processor. That way, no one can come up and spin up your amp and blow the speakers.

Forgive my ignorance here, but the Driverack will be between the DJ equipment and the amps, correct?

That's correct. It's the last control of the signal before hitting the amps. That's why you can run the amps wide open. The amount of signal reaching the amp will be determined by the Driverack.

jHands wrote: ↑Wed Dec 03, 2025 9:59 pm

Bruce Weldy wrote: ↑Tue Dec 02, 2025 9:31 am

jHands wrote: ↑Mon Dec 01, 2025 11:01 pm

Forgive my ignorance here, but the Driverack will be between the DJ equipment and the amps, correct?

That's correct. It's the last control of the signal before hitting the amps. That's why you can run the amps wide open. The amount of signal reaching the amp will be determined by the Driverack.

Ok, so if the amps are wide open, and the driverack is limiting signal to the amp, the wattage is only what the driverack signal allows? I will be running this system off of a 300ah LiFePO4 battery through a 3000 watt renogy inverter. I am trying to run the system the most efficient way possible.